Baby on the way for 'Bachelor' couple Jason and Molly Mesnick

Now this is a "Bachelor" success story!

While most couples stemming from the ABC reality show break up soon after their made-for-TV courtships start, Season 13 twosome Molly and Jason Mesnick are expecting their first child together.

"We couldn't be more excited about the pint size peanut on the way :)," Molly tweeted.

The couple walked down the aisle in 2010.

Not to say the duo was without controversy - Jason proposed to contestant Melissa Rycroft before breaking up with her and confessing his feelings for runner-up Molly.